Process for the combustion of gas.



H, R, MAXON.

PROCESS FOR THE COMBUSHOI.l 0F GAS.

APPLICATION msnm/v1.15. 1918.

l ,29 l ,589 luened Jan. 14, 1919.

HARRY R. MAXON, OF MUNCIE, INDIANA.

PROCESS 'EOE TH COMBUSTION OF GAS.

met ,een

Application tiled March 16,1918.

lle itV known that. l, lltnun4 lt. Maxon'. a citizen of the `UnitedStates, residingr at ltluncie, in the county ot Delaware and State ofIndiana, have invented certain ne and uset'ul Improvements in Processesfor the (`oml ustion ot' (las. ol which the following is aspecification.

lrior to this invention the most'. usual method of burningy tra.' l'orheating,T purposes has heen to niilY the gras with a certain proportionor air, insuliicient, lor pei-feet combustion, and `leed the mixture sol'ormed to a hui-ner aty the desired location where additional air`iupplied either from the, surrounding: atmosphere or thy injection tocompletely constitute the ifuel gas. 'l`he gras or air or hoth areinjected under consideralole pressure and so discharged t'rom thelhurner, and as the mixture has to talt'e up l'roin the surroundingatmosphere sullieient air to complete the combustion ignition does nottalee place directly at the orifice ol' the hurner hut, :it: a distancetherefrom depending upon the pressure ol' the mixture und the access oladditional air. 'l'he length of Llie.ll:\|ne is governed hy the distancethe mixture is'required to go het'ore puking up sullieient ait-tocomplete the comhustxion. lty has generally heen recognized that 'lormost, purposes a so-called slo\v la/,y llame is desirahle, to wit7 onewhich moves slowly` ignites directly at the nozzle oi the hurner, andimmediately hurus throughout iu a lhroad com]aratively short` llaine.Veith this iu view the. efiort has heen made to t'eed to the hurner amixture ol' air and comhustihle, ,L'as in the required proportions foreconomical and etlicient eonihustion `hy mixing' llhe, air und gas inthe required proportions at some distance l'rom the hurner. injectingthey gas as usual under eonsiderahle pressure, therehy causing a more orless complete mix ture and l'oreing the mixture to the burner. 'lhere ishowe\'er always danger in such devices ot' the striking?. hack ot theflame through the hurne' and conduit which has heen mety with more orless success hy interposingr in the conduit leading to the hurner gauzeor other material adapted to ohstruetl the Flow, and exerting sullicienlpressure to drive the mixture at,y a speed in excess of that. at whichthe combustion of the gas could travel backward l'rom the hurner. Thisis ohjeetiomihle, however. because of the high pressure neeessnry, andthe incom- Speoieation of Letters Patent.

Patented Jan. ll/t, l19t 9.,

Serial No. 222,829.

plete mixture of the combustible gas and air. ln my improved process theeomhnstible gas and ai'r are introduced into a mixing device ati verylonl pressures, the air prefer-- ahly heing at atniosnherie pressure orless, and the lgas butt. slightly ahove atmospheric nressure. Themixture thus lormed is 'led hy the mixingr device, which may he in the.nature ol :i fan, through n large unoh strut-,ed conduit, by which thelow pressure oll the mixture. is preserved to the hurner where it ishorned, preferably without suhstnntial access ot' additional air.

A great, variety of apparatus may he employed for practising; myinvention, but in the aet'ompanying drawingr l have shown a devicesuitable fonthe 'purpose and which l'ormsthe siil)ject-matter of mytro-pending application Serial No. 12115747, tiled (lctoher t). lttlt.ltelerriingr to thel drawiu i', Figure t is a t'ront elevation ot' afurnace having my invention applied thereto; and Figs. 2 and Il are sideand front', elevations, respectively, ot` the mixing device used inconueotion therewith, Fig. l heing partly in section to hetter show theconstruction.

ln the specific device, shown in Fig'. 1 my invention is applied to aplurality ot' lurnaces, the furnace structure t hein; shown as ot' anordinary type and provided with burners ."3 which are individuallysupplied with eomhustihle gas mixture from several lans ti. 'l` econstruction of the furnace is such that here is no substantial supplyof outside air. The lans. except. in the respects hereinafter pointedout. are ot usual or ordinary construction receiving their supplies otgas and air ahoutv their axes and discharging: them,tangentially. Thecasing 8 is therefore l'ormed with a central opening at, one side towhich is connected a 'neck 1;-5 ol large diameter. the outer end ofwhich re eeives a large gas pipe 11 controlled by a hand valve 12. Avalve l0 of a well known type surrounds the pipe 11 and is adjustiahlethereon to regulate the supply of nir to the fan. ln the construct-ionshown the air if.; taken directly into the fan casing from theatmosphere. though obviously, provided the air is not put, under teomuch pressure. it; might be led through n conduit of considerable lengthand" if desired preliminnrily heated.

The gas as heretofore noted is introduced in large volume aty very lowpressure and the same is true of the air. Partly because of Sti ".0 Aprocess for the coillbustion of 'thelw pressure it is necassm'y tomeclumimv pressue is uiiutziiueci and lie speed of How is suh uiieiy :isto prevent srikiug back. fit is thus admitted to (the furimcieSubsiiantiully zit the flujnzice prcsm'g cumpateiy mixed througinutso-hutwhen it is subjected to the'ignitou tempmuure of the :luuaceiimmediately is ignited througmut and burns with a broad lazy fzuue.

Icaim: f

gas

im 172mm@ which Consists in Suppiyiug gus und air to mixers, rguiatiuggthe ,gms und uit to tim relative proportions required for completecombustion, mixing the gus und uit7 conduct ingithe resultant mixtureo aburner, burning the mixture, and uminziiuing the speed. of flow of themixture at the lowest rute necessary to pi'veut buck firing.

In :i provexs for the cmuiiustiou 0i' gus Suppiyiug nii` :uid t0 a.mixei, thu form-vr :it u iow pi'essure und fue iu'tvr at substuutiziiiyatuiosphsvsic pi'essuz'e, ivgguiuiing Hic gais mui nii" tu Huf inia'fivulu'upm'timis nu ture tu u bulum', burning the mixturvn und firing.

'HARY R. MAXN.

